Loose leaf book



i Juiyvzl, 1931. J, A KEENE 1,815,511

LOOSE LEAF BOOK Filed June 22. 1929 "25 tached a `ball Patented July 21,1931 .JAMES KEENE, orl LONDON, ,ENGLAND LQOSE LEAF BOOK Applicationiiled :Tune 22, 1929,Sera1No. 372,850, and in Great Britain December 28,19,28.

. Vllhis invention relates fto loose `leal:l books of the kind in .whichthe leaves or papers are filed VAupon loops of substantially circularorm,.each,loop 'being made in halves or sub- A stantial'lyseniicircuilar portions in hinged relationlso .thattlieycan be separatedto receive .the leaves .or lpapers and :then closed to preventescapethereof when being turned over `upon :the Vsaidrzloops.

"l0 According to the invention a spring snap device fis provided `forholding ,the sections of the loopspin a closed position.

.Further according cto the present invention ithere isprovided a looselea'i book of the 'typereferred to, whereinthe sections of all the loopsare arrangedto ,be opened or closed and maintainedclosed by a snapLactiondevice comprising two ball heads arranged to ride one overtheother. Y

In a suitablearrangementifor carryingthe invention into fpractice `thevhalves of the loops are carried` by metalstrips each formed with ilugs4along one :edge which interlock to Vtorina hinge. To each.of';thestrips ,is at.- or -rounded vmember, which members ibfear against foneanother in the closed position yoifthe loops in ,such a mannerthattheynslightly 1 obstruct one anothers t path of movement whenopening the loops,

" 0 and .require to Vbe. moved apart during such opening movement, suchmovement apart being automatically effected by the action oftheroundedmembers as they ride on one aiiiotlierwvhen pressingthemin thedirections necessary lfor .opening-the loops. Thesaid members areconnected tothe strips through .the mediuniof resilient wiresorrodsallowvgig-Qta.spring-snap action of thesaid meiners.

gether in the closed position and the half .loops and :the roundedffastening members are advantageously formedintegral with the 45 stripmembers by stamping from sheet metal.

.The endsofthehalf loops may -buttto- *section on the line 3.-?) ofFigure a strip of metal and the other halves are similarly formedintegral with asecond strip oi' metal. The free edges of the strips ofinet-al are provided with lugs arranged so that on the said edges beingplaced together the lugs on one strip `will ,extend over they otherstrip and the .two ystrips `.when so arranged will Vcorrespond Lto theleaves of la hinge. `The .strips arranged in the manner described arecarried between the inturned ai edges 4of a spring metal member which,is substantially of Vsemi-.circular .crosssection so that Va certainpressure -is applied Eto `the edgesofthe strips fromWlhiclithehalffloops extend. Substantially midway oteach o f E? saidstrips is provided one ofaupairfof alims each carrying e ball head LSOlalilaesedfathat when the said balls yare moved past A.each other, 5inVa direction to cvloseftheV loops, they .will ride Tover ,one yanotherEin frictional ,con- Tf1 tact and with a .certain amount of springfiction, irlili .ensuresitheir remeiinsrn the position to which they aregrieved l,and theren by ymaintain,1the loopsclosed, and ontlie saidballs being forcibly` moved the rings .-7.5 .will be opened. Y

Y The spring member is providedzwith holes, andeach of theadjacentedgesofthe `strips vwith `registei'fing semivcircul'ar cutaway ,pon.tions Iandpolst ,members are .passed there 'i through anddalso througha strip offinaterial and a inetalback piecepvhereby ontheinaterial,being glued, or Lotherwise secured to the baclcof abook, the Whole willbeheld securely in. position.

In order that the invention maybeiindei'- stood, the same `will now`bedescribed with reference to the accompanying drawings, in .whichFigure l shows anelevationiofa pQrtQn $30 of a loose leaf bookconstructed according to the present invention, with the `fastoning:loops closed.

-EigiireQ illustratesonan enlarged scalea section on tlieline 2-2 ofvFigure '1.

c iFigure Sillustrates on an'enlargedrscale a yl. Figure :4 isaviewsimilar to. Figures2 and 3,A showin-githe' loops in an open,position. mi iligurejV is a freer view .of the loop and 1 spring membersassembled but detached from the book, and

Figure G is a perspective view of portion of the fastening device.

Referring to the drawings, 1, 2 are two series of half loops formedintegral with metal strips 3, 4 on the abutting edges of which lugs 5, Gare formed and 7 is a semi-circular spring member between the inturnededges S, 3 of which the strips 3, 4 are secured. Arms 9 and 10 areprovided on the strips 3, 4 substantially midway of the length thereof,and carry ball heads 11 and 12.

The spring member 7 is cut away at the edges to accommodate the halfloops 1 and 2 and the arms 9 and 10.

The strips 3 and 4, when assembled with the spring member 7, appear onthe under side as shown in Figure lloles 13 are provided in the springmember T and conjointly in strips 3, 4 by forming semi-circular notchesin the adjacent edges thereof. Post members 14 (Figures 1 and 2) arepassed through the holes 13 and also through a piece of flexiblenaterial 15 and holes in a metal backing piece 16, so that the members7, 15 and 16 are secured together in a manner which allows a. certainamount of spring action for the member 7. The piece of material 153 issecured to the back orP a book 17 by gluing or other suitable means.

Vhen the loops are in the closed position the parts will be as shown inFigures 1, 2, 3 and detailed 5, with the loops securely maintained insuch' closed position by the spring action of the member 7 on the strips3, 4 and the interengagement of the ball heads 11 and 12.

To open the loops the ball heads 11 and 12 are forced over one anotherinto the position shown in Figure 4, and move with them the strips 3 and4 and the half loops 1 and 2. The parts are maintained in a fixed openposition by the spring member 7 pressing upon the edges of the strips 3and 4 and by the lugs 5 and G of the strips 3 and 4 resisting thepressure everted by the spring member.

rlhe leaves for the book are formed with cut-away portions 13, indicatedby the dot and dash lines, Figure 1, so that the said leaves on beingturned will pass the projecting ball heads 11 and 12.

Figure 6 illustrates the manner in which the half loops are formedintegral with the strips 3 and 4, an extension of the said strip beingpressed into tubular formation and thereafter suitably curved.

Claims:

1. 1n a loose leaf book of the type referred to, a plurality ofleaf-securing sectional loops, arranged with one series of sectionsadjacent a corresponding series of sections, means for hingedly securingthe adjacent sections together at one end, so that the free ends of thesame abut when in closed position, and

a snap action device including adjacent ball heads, arranged to ride oneover the other, for maintaining said loops in closed position.

2. A loose leaf book as claimed in claim 1 wherein said means forhingedly securing the adjacent sections together includes a pair ofmetal strips hingedly connected together and carrying the respectiveseries of sections, and a projecting arm bearing a corresponding ballhead at one end connected to each of said metal strips.

3. A loose leaf book as claimed in claim 1 wherein said means forhingedly securing the adjacent sections together includes a pair ofmetal strips hingedly connected together and carrying the respectiveseries of sections, and a projecting` arm bearing a corresponding ballhead at one end connected to each of said metal strips, the abuttingedge of each metal strip being provided with lugs adapted to extend overthe edge of the adjacent metal strip to afford said hinge connection.

4. A loose leaf book as claimed in claim 1 wherein said means forhingedly securing the adjacent sections together includes a pair ofmetal strips hingedly connected together and carrying the respectiveseries of sections, a projecting arm bearing a corresponding ball headat one end connected to each of said metal strips, and a spring memberfor maintaining said metal strips in abutting relation to one another.

5. A loose leaf book as claimed in claim 1 wherein said means forhingedly securing the adjacent sections together includes a pair ofmetal strips hingedly connected together and carrying the respectiveseries of sections, a projecting arm bearing a corresponding ball headat one end connected to each of said metal strips, the abutting edge ofeach metal strip being provided with lugs adapted to extend over theedge of the adjacent metal strip to afford said hinge connection, and aspring member of substantially semi-circular cross section, havinginturned edges for engaging said strips, to maintain the same inabutting relation.

G. A loose leaf book as claimed in claim 1 wherein said means forhingedly securing the adjacent sections together includes a pair ofmetal strips hingedly connected together and integrally carry therespective series of sections, and a projecting arm bearing acorresponding ball head at one end integrally connected to each of saidmetal strips.

7 A loose leaf book as claimed in claim 1 wherein said means forhingedly securing the adjacent sections together includes a pair ofmetal strips hingedly connected together and carrying the respectiveseries of sections, a projecting arm bearing a corresponding ball headat one end connected to each of said metal strips, the abutting edge ofeach metal strip being provided with lugs adapted to extend over theedge of the adjacent metal strip to afford said hinge connection, aspring member of substantially semi-circular cross section havinginturned edges for engaging said strips to maintain the same in abuttingrelation, a backing piece, and a piece of ma-r serial secured betweensaid spring member and said backing piece.

JAMES ADAMS KEENE.

